title: Valsalva maneuver in chagasic patients with documented past medical history of acute chagasic myocarditis.
mesh_terms: D000208:Acute Disease; D000328:Adult; D016022:Case-Control Studies; D002598:Chagas Cardiomyopathy / Q000503:physiopathology*; D006321:Heart / Q000294:innervation; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D009205:Myocarditis / Q000503:physiopathology; D010275:Parasympathetic Nervous System / Q000503:physiopathology; D014636:Valsalva Maneuver / Q000502:physiology